TC51 doesn't work with Interleaved 2of5 codes

Hello everyone,

I have been following tutorials and samples for EMDK for Android 7.0. I am developing an application for one of my clients and that application must be able to scan Interlaved 2of5 codes. Unfortunately no matter what I write, setting up decoders in next function doesn't work. Here is how I initialize scanner(code is written in the Kotlin language):

private fun initializeScanner() {

   if (scanner == null) {

   scanner = barcodeManager.getDevice(BarcodeManager.DeviceIdentifier.DEFAULT)// INTERNAL_IMAGER1)

   scanner?.addDataListener(this);
   scanner?.addStatusListener(this);

   scanner?.triggerType = Scanner.TriggerType.HARD



   setDecoders()

   scanner?.enable()

   scanner?.read()

   startRead = true

   }

}

and setting the decoders for the scanner:

private fun setDecoders() {

   if (scanner != null) {

   try {

   val config = scanner?.getConfig()

  config?.decoderParams?.chinese2of5?.enabled = true
   config?.decoderParams?.matrix2of5?.enabled = true
   config?.decoderParams?.d2of5?.enabled = true

   config?.decoderParams?.i2of5?.enabled = true
   /* config?.decoderParams?.i2of5?.convertToEan13 = false*/
   config?.decoderParams?.i2of5?.length1 = 0
   config?.decoderParams?.i2of5?.length2 = 18
   config?.decoderParams?.i2of5?.reducedQuietZone = false
   config?.decoderParams?.i2of5?.redundancy = true
   config?.decoderParams?.i2of5?.reportCheckDigit = false
   config?.decoderParams?.i2of5?.verifyCheckDigit = ScannerConfig.CheckDigitType.NO
   config?.decoderParams?.i2of5?.securityLevel = ScannerConfig.SecurityLevel.LEVEL_1



   // Set EAN8
   config?.decoderParams?.ean8?.enabled = true
   // Set EAN13
   config?.decoderParams?.ean13?.enabled = true

   config?.decoderParams?.gs1QrCode?.enabled = true
  config?.decoderParams?.gs1Datamatrix?.enabled = true

   scanner?.setConfig(config)

  } catch (e: ScannerException) {

  updateStatus(e.message!!)

  }

  }

}

When I try to test the scanner on TC51, then scanning EAN8,13 and gs1 code works. Unfortunately, if I for example set ean8?.enabled = false, then after rebuild and rerun the application, I am still able to scan EAN8 codes. When I set the i2of5?.enabled to either true or false I am not able to scan Interleaved2of5 codes on the TC51 device.

I am running EMDK for Android 7.0.0

and TC 51 device with Android Nougat 7.1.2

What should I do to enable scanning of Interleaved2of5 codes  and why setting up decoders doesn't have any effect on the device?

Can you help me please?

Thanks in advance.